04 6.0 fuel issue on side of road!!! - Ford Powerstroke Diesel Forum
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Old 06-17-2014, 01:44 PM
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04 6.0 fuel issue on side of road!!!

2004 6.0 f350. Fuel pump issue. Just replaced the pump in the HFCM last week! Truck ran great up until I filled it up about an hour ago! Don't think my fill up had anything to do with it but I drained the water separator and fuel looked perfect...I'm an aviation mechanic and I'm used to completing fuel samples! When I turn the key on but do not start the engine, my secondary bowl fills up with fuel, I start it and runs fine for about 15-20 seconds than starts to miss, checked the fuel pump and it was not running. Checked the voltage at the wires, 10.7 volts for the first 20 seconds and then it never turns back on...what supply's the power to the fuel pump that is "bypassed" during the initial start up procedure that could cause this issue??? I'm pulling the passenger kick panel off right now to check the inertia switch! Thank you in advance! I live in Kodiak Alaska and there are bears out here! I don't want to get eaten while fixing my 6.0!
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Old 06-17-2014, 01:51 PM
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Welcome to the site! Have you done another fuel sample since you have started having troubles? Do you have a monitor to check for codes?
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Old 06-17-2014, 01:54 PM
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We don't get the best quality fuel up here in Kodiak, I change the filters about 2-3 times a year and drain my water separator on a weekly bases! I never really get anything out but everyone in a while a bad shipment of fuel arrives and it becomes the talk of the town! I drained my fuel about a week ago now and just after this started happening. Both samples looked fine with no water or particles..aka "clear and bright".
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Old 06-17-2014, 02:00 PM
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do u have any kind of a monitor to pull codes with?
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Old 06-17-2014, 02:02 PM
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just fyi the fuel pump comes on with the KOEO for about 20 seconds then shuts off until you crank the motor and it runs

i am guessing you lost a relay or sensor i am wondering if you could feed the pump 12 volts to get it home
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Old 06-17-2014, 02:04 PM
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the pass panel should have a hole to access the inertia switch
worth a try but it kills power to the pump so you wouldn't have any power to the pump even at key on IMO
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Old 06-17-2014, 02:06 PM
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Yeah...I can make a jumper to get home...if I can fined some wire! But the KOEO, it runs fine, stops after 20 sec...I start the truck and it never comes back on...is there a pressure switch or something in the secondary bowl/fuel lines that says...hey I need more pressure or does the pump run constantly when the engine is running?
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Old 06-17-2014, 02:07 PM
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Quote:
Originally Posted by ZMANN View Post
the pass panel should have a hole to access the inertia switch
worth a try but it kills power to the pump so you wouldn't have any power to the pump even at key on IMO
That's what I was thinking...complete kill switch.
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Old 06-17-2014, 02:13 PM
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Quote:
Originally Posted by kinnisoj View Post
do u have any kind of a monitor to pull codes with?
Yes, my Bully Dog tuner(always on no power when not towing). I had #2 and #4 cylinder contribution /balance then I shut it off before I did any damage. And monitor checks not complete
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Old 06-17-2014, 02:18 PM
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you could make a jumper from the running lights or trailer harness ( wires close to the pump )
the pump runs it's not controlled so if u can get it on it would likely get you home

but that is a wild guess

that I would totally try
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6.0 diesel, fuel delivery, fuel pump

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